Diff: main.cpp

Revision:

0:e89ff0cffbd5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Sep 17 08:01:31 2014 +0000
@@ -0,0 +1,116 @@
+#include "mbed.h"
+#include "MMA8451Q.h"
+
+// define I2C Pins and address for KL25Z. Taken from default sample code.
+PinName const SDA = PTE25;
+PinName const SCL = PTE24;
+#define MMA8451_I2C_ADDRESS (0x1d<<1)
+
+//serial connection to PC via USB
+Serial pc(USBTX, USBRX);
+
+int main(void)
+{
+    //configure on-board I2C accelerometer on KL25Z
+    MMA8451Q acc(SDA, SCL, MMA8451_I2C_ADDRESS); 
+    //map read acceleration to PWM output on red status LED
+    PwmOut rled(LED_RED);
+    float x,y,z;
+    while (true) {
+        float x, y, z;
+        x = acc.getAccX();
+        y = acc.getAccY();
+        z = acc.getAccZ();
+        wait(0.05f);
+        pc.printf("%1.2f %1.2f %1.2f\n", x, y, z);
+    }
+}
+
+
+/* *** PROCESSING SKETCH
+// Three-axis Graphing sketch
+
+
+// This program takes ASCII-encoded strings containing floating point numbers
+// from the serial port at 9600 baud and graphs them. It expects values in the
+// range -1.0 to 1.0, followed by a newline, or newline and carriage return
+
+// Created 20 Apr 2005
+// Updated 18 Jan 2008 by Tom Igoe
+// Adapted 16 Sep 2014 by Bjoern Hartmann for mbed
+// This example code is in the public domain.
+
+import processing.serial.*;
+import java.util.Scanner;
+
+Serial myPort;        // The serial port
+int xPos = 1;         // horizontal position of the graph
+float lastX =0.f, lastY=0.f, lastZ=0.f;
+float minVal=-1.0;
+float maxVal=1.0;
+
+void setup () {
+  // set the window size:
+  size(400, 300);        
+
+  // List all the available serial ports
+  println(Serial.list());
+  // Open whatever port is the one you're using.
+  myPort = new Serial(this, "/dev/tty.usbmodem1412", 9600);
+  // don't generate a serialEvent() unless you get a newline character:
+  myPort.bufferUntil('\n');
+  // set inital background:
+  background(200);
+}
+void draw () {
+  // everything happens in the serialEvent()
+}
+
+void serialEvent (Serial myPort) {
+  // get the ASCII string:
+  String inString = myPort.readStringUntil('\n');
+  
+  if (inString != null) {
+    //use the Scanner class to parse 3 floats on a line.
+    Scanner scanner = new Scanner(inString);
+    float xAcc=0.0,yAcc=0.0,zAcc=0.0;
+    try{
+      xAcc = scanner.nextFloat();
+      yAcc = scanner.nextFloat();
+      zAcc = scanner.nextFloat();
+      
+    } catch (Exception e) {     
+      print(e); //InputMismatchException
+    } 
+    
+    //draw x line in red
+    float xAccScreen = height - map(xAcc, minVal, maxVal, 0, height);
+    stroke(255,0,0);
+    line(xPos-1,lastX,xPos,xAccScreen);
+
+    //draw y line in green
+    float yAccScreen = height - map(yAcc, minVal, maxVal, 0, height);
+    stroke(0,196,0);
+    line(xPos-1,lastY,xPos,yAccScreen);
+
+    //draw z line in blue
+    float zAccScreen = height - map(zAcc, minVal, maxVal, 0, height);
+    stroke(0,0,255);
+    line(xPos-1,lastZ,xPos,zAccScreen);
+
+    // at the edge of the screen, go back to the beginning:
+    if (xPos >= width) {
+      xPos = 0;
+      background(200);
+    } else {
+      // increment the horizontal position:
+      xPos++;
+    }
+    
+    lastX = xAccScreen;
+    lastY = yAccScreen;
+    lastZ = zAccScreen;
+    
+  }
+}
+*/
\ No newline at end of file